The Glossary of the International Trade Centre (ITC) on the technical terms used in the packaging sector is a database designed to provide updated information on the specific terminology used in the packaging industry. This Glossary is a tool placed at the disposal of users for information only. It is not designed to replace the appropriate professional advice in any way. Users are invited to submit their comments and observations by email to Mr. Frederic Couty, Senior Adviser, Export Packaging at the following email address: fcouty[at]intracen.org
Select an alphabetic above to access the glossary.
Any closure equipped
with a liner capable of holding a vacuum.
Filling of liquids
into containers by means of evacuating most of the air and allowing the
liquid to replace it. Used in particular to prevent foaming or spilling,
during high speed filling.
containers from which virtually all the air has been removed prior to final
sealing. Often used to achieve a low oxygen level in the package, and
therefore in the product, as this is normally the major factor determining
shelf life of foodstuffs. The container must provide a sufficient gas barrier
to preserve the vacuum.
A container closing
device which regulates the flow of material through an opening. Generally
used on containers of gas or liquid packed under pressure, but also on
multiwall paper sacks.
(1) Chemical applied
to paper or plastic packaging materials to absorb humidity inside a package
(2) material that sublimes and deposits a thin protective film on metal surfaces,
thereby inhibiting or retarding rust formation.
The rate of passage
of vapour (usually water vapour) through a material. The vapour permeability
of of a packaging material is defined by its VTR.
A liquid preparation
which, when spread onto a surface, dries to form a hard glossy coating. Used
both to protect another coating or printing and to enhance the appearance of
the surface. See also: Lacquer.
component of a printing ink that
carries and binds the pigment
particles together and adheres them to the substrate.
A small, normally
bottle-shaped, container, made of glass or plastic, with a neck finish
designed to accommodate some type of stopper. Used almost exclusively for the
packaging of pharmaceutical liquids and powders.
A specific test to
determine the ability of a container to protect its contents from vibration,
at varying amplitudes and frequencies. See also: Shock test.
A generic term for
any of the vinyl plastics or for products made from them e.g. polyvinyl
Chloride plastics. Plastics based on resins made by the
polymerization of vinylidene chloride or copolymerization of vinylidene
chloride. Main packaging uses are as barrier layers or coatings on other
flexible substrates such as cellophane and paper. The films are flexible,
transparent, have excellent cling properties and low permeability to water
vapour and gases.
A raw material
obtained directly from the basic conversion or manufacturing process which
has not been subjected to use or processing other than that required for its
original production and which contains no recycled materials.
A viscous solution
made by treating cellulose (pulp from wood or cotton) with caustic alkali
solution and then with carbon disulphide. Viscose is the basic material used
for cellophane film, and for one type of shrink-on bottle closure seals.
The property of a
material which governs its resistance to flow. Water has a relatively low
viscosity, oil a higher viscosity.
A filling method in
which a measured volume of product is put into a package, rather than a